From 621d157676940640f5d496a52b2936e37b81f1b4 Mon Sep 17 00:00:00 2001 From: Evan Cheng Date: Thu, 17 Apr 2008 00:06:42 +0000 Subject: Fix a sub-register indice propagation bug. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49832 91177308-0d34-0410-b5e6-96231b3b80d8 --- test/CodeGen/X86/2008-04-16-CoalescerBug.ll | 33 +++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 test/CodeGen/X86/2008-04-16-CoalescerBug.ll (limited to 'test/CodeGen/X86/2008-04-16-CoalescerBug.ll') diff --git a/test/CodeGen/X86/2008-04-16-CoalescerBug.ll b/test/CodeGen/X86/2008-04-16-CoalescerBug.ll new file mode 100644 index 0000000000..30accad586 --- /dev/null +++ b/test/CodeGen/X86/2008-04-16-CoalescerBug.ll @@ -0,0 +1,33 @@ +; RUN: llvm-as < %s | llc -march=x86 + +define void @Hubba(i8* %saveunder, i32 %firstBlob, i32 %select) nounwind { +entry: + br i1 false, label %bb53.us, label %bb53 +bb53.us: ; preds = %bb94.us, %bb53.us, %entry + switch i8 1, label %bb71.us [ + i8 0, label %bb53.us + i8 1, label %bb94.us + ] +bb94.us: ; preds = %bb71.us, %bb53.us + %result.0.us = phi i32 [ %tmp93.us, %bb71.us ], [ 0, %bb53.us ] ; [#uses=2] + %tmp101.us = lshr i32 %result.0.us, 3 ; [#uses=1] + %result.0163.us = trunc i32 %result.0.us to i16 ; [#uses=2] + shl i16 %result.0163.us, 7 ; :0 [#uses=1] + %tmp106.us = and i16 %0, -1024 ; [#uses=1] + shl i16 %result.0163.us, 2 ; :1 [#uses=1] + %tmp109.us = and i16 %1, -32 ; [#uses=1] + %tmp111112.us = trunc i32 %tmp101.us to i16 ; [#uses=1] + %tmp110.us = or i16 %tmp109.us, %tmp111112.us ; [#uses=1] + %tmp113.us = or i16 %tmp110.us, %tmp106.us ; [#uses=1] + store i16 %tmp113.us, i16* null, align 2 + br label %bb53.us +bb71.us: ; preds = %bb53.us + %tmp80.us = load i8* null, align 1 ; [#uses=1] + %tmp8081.us = zext i8 %tmp80.us to i32 ; [#uses=1] + %tmp87.us = mul i32 %tmp8081.us, 0 ; [#uses=1] + %tmp92.us = add i32 0, %tmp87.us ; [#uses=1] + %tmp93.us = udiv i32 %tmp92.us, 255 ; [#uses=1] + br label %bb94.us +bb53: ; preds = %entry + ret void +} -- cgit v1.2.3